Does dynamic Rashba splitting slow radiative recombination in perovskites? · revision history

Revision 2

Accepted · core change · record

Changes against revision 1:

Title · changed
Revision 1: Does dynamic Rashba splitting slow radiative recombination in perovskites
Revision 2: Does dynamic Rashba splitting slow radiative recombination in perovskites?
Plain
Heavy lead atoms and a fluctuating lattice could split the energy bands by spin, making light emission slightly indirect and slower. Whether this effect is large enough to matter is disputed.
Precise · changed · core
Revision 1: Inversion-breaking lattice fluctuations in MAPbI3 could produce a dynamic Rashba splitting that offsets the band extrema in momentum and lowers the bimolecular radiative coefficient $B$ (measured of order $1e-10\,\mathrm{cm}^3/\mathrm{s}$). Determine the size of the room-temperature splitting (static or dynamic, in meV) and its effect on $B$, with photon recycling separated out. An answer is the splitting value and the fractional change of $B$.
Revision 2: Inversion-breaking lattice fluctuations in MAPbI3 could produce a dynamic Rashba splitting that offsets the band extrema in momentum and lowers the bimolecular radiative coefficient $B$ (measured of order $10^{-10}\,\mathrm{cm}^3/\mathrm{s}$). Determine the size of the room-temperature splitting (static or dynamic, in meV) and its effect on $B$, with photon recycling separated out. An answer is the splitting value and the fractional change of $B$.
Settled by
Spin- and momentum-resolved photoemission or circularly polarized spectroscopy at room temperature combined with molecular-dynamics band-structure calculations.
Kind
well-posed
Answer type
value
References
(empty)
Literature status
contested
Status note
(empty)
Posed since
(empty)

Decisions